performance, functionality, and cost goals of current and
next generation mobile infrastructure basestations. It
provides high dynamic range performance in a low profile
surface-mount leadless package that measures 6 x 6 mm
square.
It is ideally suited for high dynamic range receiver front
ends using diversity receive channels. Functionality
includes frequency conversion and IF amplification,
while an integrated LO driver amplifier powers the
passive mixer. The MCM is implemented with reliable
and mature GaAs MESFET and InGaP HBT technology.
Typical applications include frequency downconversion
used in W-CDMA 2.5G and 3G mobile base transceiver
stations.
Functional Diagram
AMP1
INPUT
GND
GND
IF1
OUTPUT
23
MIXER
IF1
28
RF 1
1
INPUT
GND 2
BIAS 3
GND 4
N/C 5
GND 6
RF 2 7
INPUT
27
GND
26
25
24
•
•
•
•
•
•
•
•
•
Dual channels for diversity
+30 dBm Input IP3
+12.5 dBm Input P1dB
RF: 1900 – 2200 MHz
IF: 150 – 300 MHz
Single supply operation (+5 V)
Pb-free 6mm 28-pin QFN package
Low-side LO configuration
Common footprint with other
PCS/UMTS/cellular versions
RF
IF
IF Amp 1
GND
22
21 BIAS
20 GND
19 N/C
18 GND
17 LO
16 GND
15 N/C
14
GND
LO Driver Amp
IF Amp 2
RF
8
GND
9
MIXER
IF2
IF
10
GND
11
AMP2
INPUT
12
GND
13
IF2
OUTPUT
Top View
Specifications
(1)
Parameters
RF Frequency Range
LO Frequency Range
IF Frequency Range
% Bandwidth around IF center frequency
IF Test Frequency
SSB Conversion Gain
Gain Drift over Temp (-40° C to 85° C)
Input IP3
Input IP2
Input 1 dB Compression Point
Noise Figure
LO Input Drive Level
LO-RF Isolation
LO-IF Isolation
Branch-Branch Isolation
Return Loss: RF Port
Return Loss: LO Port
Return Loss: IF Port
Operating Supply Voltage
Supply Current
Thermal Resistance
Junction Temperature
Units
MHz
MHz
MHz
%
MHz
dB
dB
dBm
dBm
dBm
dB
dBm
dB
dB
dB
dB
dB
dB
V
mA
°C / W
°C
Min
Typ
1900 – 2200
1600 – 2050
150 – 300
±7.5
240
10
±0.6
+30
+37
+12.5
11
0
12
26
44
15
18
14
+5
380
Max
Comments
See note 2
See note 3
12
+1.5
Temp = 25° C
Referenced to +25° C
See note 4
See note 4
See note 4
See note 5
P
LO
= 0 dBm
P
LO
= 0 dBm
8
-1.5
+25
+33
-2.5
+2.5
320
475
27
160
See note 6
1. Specifications when using the application specific circuit (shown on page 3) with a low side LO = 0 dBm and IF = 240 MHz in a downconverting application at 25° C.
2. IF matching components affect the center IF frequency. Proper component values for other IF center frequencies than shown can be provided by emailing to applications.engineering@wj.com.
3. The IF bandwidth of the converter is defined as 15% around any center frequency in its operating IF frequency range. The bandwidth is determined with external components. Specifications are valid around
the total ±7.5% bandwidth. ie. with a center frequency of 240 MHz, the specifications are valid from 240 ± 18 MHz.
4. Assumes the supply voltage = +5 V. IIP3 is measured with
∆f
= 1 MHz with RF
in
= -5 dBm / tone.
5. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.
6. The maximum junction temperature ensures a minimum MTTF rating of 1 million hours of usage.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
DC Voltage
Junction Temperature
Ordering Information
Part No.
CV211-2
CV211-2F
CV211-2PCB240
Rating
-40° to +85° C
-55° to +150° C
+5.5 V
+220 °C
Description
UMTS-band Dual-Branch Downconverter
(leaded QFN Pkg)
UMTS-band Dual-Branch Downconverter
(lead-free/RoHS-compliant QFN Pkg)
Fully-Assembled Application Board, IF = 240MHz
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: sales@wj.com
•
Web site: www.wj.com
September 2004
CV211-2
AMP1
INPUT
GND
GND
IF1
OUTPUT
MIXER
IF1
28
RF 1
1
INPUT
GND 2
BIAS 3
GND 4
N/C 5
GND 6
RF 2 7
INPUT
27
GND
26
25
24
23
GND
22
21 BIAS
The Communications Edge
TM
UMTS-band Dual-Branch Downconverter
Product Information
Device Architecture / Application Circuit Information
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